How to Change Your Mind and Your Life. Known as the father of positive psychology, Martin E P Seligman draws on more than twenty years of clinical research to demonstate how optimism enhances the quality of life, and how anyone can learn to practice it. Offering many simple techniques, he explains how to break an 'I give up' habit, develop a more constructive explanatory style for interpreting your behaviour, and experience the benefits of a more positive interior dialogue. These skills can help you break up depression, boost your immune system, better develop your potential, and make you happier.